Hi Rascoe,
A warm welcome to the Roku Community!
We're sorry to hear about the playback issue with the Roku channel. Have you tried to remove the Roku channel to see if it helps? If you haven't tried it yet, you can remove the affected channel and reinstall it.
Restart your device before adding the channel again to ensure the process is successful. We recommend doing this from the Settings menu by navigating to Settings > System > Power > System restart (if you do not see a Power submenu, skip to the next step).
Checking for a manual update to see if the issue is still occurring. To check for a manual update, navigate to Home > Settings > System > System update > Check now.
For additional information, see these support site resources:
Let us know if this works for you!
Warm regards,
Chel